CVE-2005-4890
Published: 4 November 2019
There is a possible tty hijacking in shadow 4.x before 4.1.5 and sudo 1.x before 1.7.4 via "su - user -c program". The user session can be escaped to the parent session by using the TIOCSTI ioctl to push characters into the input buffer to be read by the next process.
Notes
| Author | Note |
|---|---|
| mdeslaur | sudo is also apprently vulnerable to this, so the use_pty option was added. We need to verify versions, and make sure it is actually getting honored (apparently the option wasn't working: http://www.openwall.com/lists/oss-security/2011/06/22/4) |
| jdstrand | sudo in 12.04 and higher has the fix for use_pty. A small patch (http://www.sudo.ws/repos/sudo/rev/8d95a163dfc1) can be used to enable it on Ubuntu 11.04 and 11.10. |
| mdeslaur | Please note that use_pty is not enabled by default in sudo, it must be specifically enabled. |
| seth-arnold | su interactive has the same problem, no fix known on 20130305 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
shadow Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
|
| bionic |
Not vulnerable
|
|
| cosmic |
Not vulnerable
|
|
| disco |
Not vulnerable
|
|
| eoan |
Not vulnerable
|
|
| focal |
Not vulnerable
|
|
| groovy |
Not vulnerable
|
|
| hardy |
Ignored
(end of life)
|
|
| hirsute |
Not vulnerable
|
|
| lucid |
Ignored
(end of life)
|
|
| maverick |
Ignored
(end of life)
|
|
| natty |
Ignored
(end of life)
|
|
| oneiric |
Ignored
(end of life)
|
|
| precise |
Ignored
(end of life)
|
|
| quantal |
Ignored
(end of life)
|
|
| raring |
Ignored
(end of life)
|
|
| saucy |
Ignored
(end of life)
|
|
| trusty |
Not vulnerable
(1:4.1.5.1-1ubuntu9)
|
|
| upstream |
Released
(1:4.1.5-1)
|
|
| utopic |
Not vulnerable
|
|
| vivid |
Not vulnerable
|
|
| wily |
Not vulnerable
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
| zesty |
Not vulnerable
|
|
|
sudo Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
|
| bionic |
Not vulnerable
|
|
| cosmic |
Not vulnerable
|
|
| disco |
Not vulnerable
|
|
| eoan |
Not vulnerable
|
|
| focal |
Not vulnerable
|
|
| groovy |
Not vulnerable
|
|
| hardy |
Ignored
(end of life)
|
|
| hirsute |
Not vulnerable
|
|
| lucid |
Ignored
(end of life)
|
|
| maverick |
Ignored
(end of life)
|
|
| natty |
Ignored
(end of life)
|
|
| oneiric |
Ignored
(end of life)
|
|
| precise |
Not vulnerable
(1.8.3p2-1ubuntu2)
|
|
| quantal |
Not vulnerable
|
|
| raring |
Not vulnerable
|
|
| saucy |
Not vulnerable
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Released
(1.8.2)
|
|
| utopic |
Not vulnerable
|
|
| vivid |
Not vulnerable
|
|
| wily |
Not vulnerable
|
|
| xenial |
Not vulnerable
|
|
| yakkety |
Not vulnerable
|
|
| zesty |
Not vulnerable
|
|
|
Patches: upstream: http://www.sudo.ws/repos/sudo/rev/aea971f1456a upstream: http://www.sudo.ws/repos/sudo/rev/e7b167f8a6e5 upstream: http://www.sudo.ws/repos/sudo/rev/26120a59c20e upstream: http://www.sudo.ws/repos/sudo/rev/8d95a163dfc1 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
- http://www.openwall.com/lists/oss-security/2011/06/02/3
- http://www.openwall.com/lists/oss-security/2012/11/05/8
- http://www.ush.it/2009/01/06/25c3-ccc-congress-2008-tricks-makes-you-smile/
- http://www.redhat.com/archives/fedora-devel-list/2004-July/msg01314.html
- https://www.cve.org/CVERecord?id=CVE-2005-4890
- NVD
- Launchpad
- Debian
Bugs
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=262454
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=628843 (shadow)
- https://bugzilla.redhat.com/show_bug.cgi?id=710208
- https://bugzilla.redhat.com/show_bug.cgi?id=173008
- https://bugzilla.redhat.com/show_bug.cgi?id=199066
- https://bugzilla.redhat.com/show_bug.cgi?id=479145
- http://www.sudo.ws/bugs/show_bug.cgi?id=142